Machine for chopping meat and other substances



w. H. ALLEN.

l Meat Chopper. No. 12,373. y Patented Feb. 13, 1353.4

lig/.1. l

j 1f .L

Egg/ 33 y C "e a Da l! I' E C .P P -P 'B Jf L/ lg UNITE STATES PATENT OFFICE.

W. H. ALLEN, OF LOVELL, MASSACHUSETTS.

MACHINE FOR CHOPPING MEAT AND OTHER SUBSTANCES.

.Spec'cation of Letters Patent No.

T o all whom t may concern.'

Be it known" that I, IVM. H. ALLEN, of Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in ACho-pping and Pulverizing Machines; and I do hereby declare that the following is a full, clear, and exact description of the co-nstruction and operation of the same, reference being had toV the annexed drawings, making a part of this specification, in which- 1 Figure 1 is a front elevation; Fig. 2, a plan; Fig. 3, a longitudinal vertical section through the center of the machine, and Fig. 4, a plan of the lower surface of the corrugated cam plate.

Similar letters of reference in each of the several figures refer to like parts.

A, is a base, to which the frame B is fastened. On top o-f the frame B, is fastened a circular board or block, C, of hard wood; surrounding which and extending upward from it, is the casing D, of tin or other material. The block C, and casing D form a receptacle into which the material to be chopped or pulverized is placed.

In the center of the circular block C, is inserted a fixed tube or bushing E, long enough to extend through the block and project both above and below it to a convenient distance. The upright shaft F, which plays freely up and down in the tube E, has fastened to its upper end the cutter head Gr, which consists of four arms, having attached to one side of them, the four knives H, H, H, H, and to the other side of them, the four hammers I, I, I, I.

To the lower-end of the shaft F, is fastened the corrugated cam plate K, and directly beneath this plate, upon the horizontal shaft L, is fixed the duplex cam VI. The shaft L is supported at each end in bearings in the frame, and motion is communicated to it by means of the crank N. Now the revolution of the shaft L, gives motion to the cam M, and this raises the corrugated plate K, until it rests upon the apex of the cam M, which is shaped so as to fit in any of the corrugations in the plate K; then as the cam moves forward, it causes a partial revolution in the cam plate- K, before it leaves it-and immediately, the shaft F, losing its support, falls, in connection with 12,373, dated February 13, 1855.

the cutter head Gr; and thus, as the cam M revolves, it not only raises the chopping` knives and pulverizers, but it also gives them a partial revolution, so that when they fall, they may not strike in the same place any two consecutive times, but may act upon different portions, until the whole mass is thoroughly chopped or pulverized.

It often happens that t-he same substance has first to be reduced to small pieces by cutting or chopping, and then reduced to a powder by pounding-for this purpose, my machine is peculiarly adapted, as when the substance has been sufficiently acted upon by the knives, it is onlyynecessary to unscrew t-he thumb nut O, when the cutter head may be inverted and the hammers I, I, I, I, be made to operate until it is thoroughly pulverized.

After the machine has been in use a long time, the surface of the chopping block C, will have been worn down by the action o-f the knives and hammers and thus the cam plate K, will fall nearer to the hub of the cam, until it may eventually strike it-but to obviate this, I turn the end of the shaft F, to a shoulder and place upon it, and above the cam plate. K, the two washers P, P, which may be changed to the lower side of vthe corrugated cam plate K, so as to elevate its position on the shaft F, as occasion may require.

I do not claim the use of 'chopping knives on vertical sliding heads, playing upon a block or receptacle; nor do I claim the cam, acting upon a circular corrugated disk, as a means of combining the liftingmotion with a gradual rotary one, this having been done before in machines for drilling rocks; but

The forming a machine for chopping meat and other similar substances by attaching the chopping knives H, H, H, H, to a central rotary spindle F, when this is operated I by the combination of the cam Mr and corrugated disk K, as herein described.

In witness whereof I have hereto set my signature this 2d day of December A. D. 1854.

WM. H. ALLEN.

In presence of O. E. CUSHING, MILTON BRADLEY. 

